24. ‘Old School’ (2003)
Todd Phillips’s practice film for the “The Hangover” puts in motion his key mantra: that married men want to be boys, pining for the dude camaraderie and, yes, the beers and chicks of bachelorhood. His three post-30 amigos — Will Ferrell (center, in green), Luke Wilson, Vince Vaughn — set up a fraternity house on the edge of campus so they can party like undergrads. Sexist, yes, but Ferrell and Vaughn sure are funny.